Batch Invalid Number error? -


this strangest error i've ever encountered. while i've seen the:

invalid number.  numeric constants either decimal (17), hexadecimal (0x11), or octal (021).

error million times, can't understand what's wrong code:

if "%ss%" == "00" (     set /a 3n%1+=%3     set /a 3n%1+=%4 )

this gives:

c:\users\...>if "00" == "00" ( set /a 3n2+=1  set /a 3n2+=3 ) invalid number.  numeric constants either decimal (17), hexadecimal (0x11), or octal (021).

i can't figure out why happening.

note: when expression false, error still fires.

the error comes fact variable name 3n2 starts number.

while variable name technically valid, starting number bad idea , should never it.

to avoid error, change first character of variable name letter or underscore.

if "%ss%" == "00" ( set /a _3n%1+=%3 set /a _3n%1+=%4 )

-

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